.PS cct_init # Usual defs... qrt=dimen_/4; hlf=dimen_/2; dim=dimen_; Reg:ebox(,dim,0.75*dim) "78xx" at Reg.center line from Reg.start left_ 0.75*dim;dot; "$V_\mathrm{in}$ " ljust_ line from Reg.end right_ 0.75*dim; dot; " $V_\mathrm{out}$" ljust_ move left_ hlf; dot; capacitor(down_); llabel(,100\mathrm{nF},); G:ground(,T) line from Reg.center-(0,0.375*dim) to (Reg.center,G) ground(,T) "\tiny VRegUse" at (2.5*dim,-dim) .PE